Car-handling apparatus.



F. E. wooufonn.

CAR HANDLING APPARATUS. APPLICATION FILED DEC-10. 19H.

Patented May 8, 1917.

5 SHEETS-SHEET F. E. WOODFORD. CAB HANDLING APPARATUS, APPLICATION FILED No.20. m1.

Patented May 8, 1917.

5 SHEETS-SHEET 2 F. E. WOODFORD. CAR HANDLING APPARATUS. APPLICATION FILED No.20. 19H.

' 1,225,694. Patented May 8,1917.

I p 5 SHEETS SHEET 3.

F. E. WOOUFOBD. CAR HANDUNG APPARATUS.

APPLlCATiON FiLED DHLZU. 1911.

1,225,694. A Pafenfed May 8,1917.

s'sHEHs-smn 4.

F. E. WOODFORD. CAR HANDLING APPARATUS; APPUCATION FILED DEC- 20. 19H

1,225,694. Patented May 8,1917. 5 SHEETS-SHEET 5y,

UNITED STATES s ecimen of man Patent. j

PATENT OFFICE. mnx-n'woonronn, or cmcseo, rumors.

' ,eisnmmm srruwrus. i

I Patented May 8,191 7. Serial No. 601,047.

y i a plication! December so, 1911. To all whom it may consent: v v th Be it known that I, Flam: Emvaiw Woooronn, a citizen of the UnitedStat resident of Chicago, meson; of Illinois,

haveinvented certainnewand useful Im- .provements in Car-Handling Apparatus, of

1 thong which the following is a specificat1on.=

My present invention'relates in general to apparatus for automatically transferring materials, and more particularlyto an im? proved system of tracks and electric circuits'fieculiarly adapted to such apparatus o'fgeneral utility, andhas speciai reference to the provision of improved automatic motor and brake, actuating circuits and devices for controlling cars as well onshuttle, as on continuous track's, adapted to handle such cars fromone or more central sion of electrlcally operated means stations ata greater or less distance from suehcarsr i j m, a v 'The principaljobjects of my present invention are the provision of improved means for controlling the movements of'the cars vide improved automatic apparatus driving the cars, foraccelerating, retarding and generally controlling the speed and movement' thereof, and for applyin the brakes not alone to vary'the s tiereof butjto'entirely stop and'hol the car; to ap ly such control to new more cars indepen ently of other cars running on the. same driven from the same source oficurrent sup- P the malternation through a common conductor a pl provision of means for supplying utility of currents at .varying otentials for actua g different devices; t

for drivmg a car motor and applying the brake of a car in alternation so that the motor is not supplied with'icurrent while the brakes are V vice verso, including a being applied and the provision of an 1mcommon conductorproved controller device for operating elec- 1 tam: from the switc trical circuits of relatively. high potentials;

the provision of improved means for protecting such circuits in general and more especiallyon switchboards andv at points disboard; the provision of improved means for for carrying currents of varying potentials;

of loading to a place from ,a common. switchboard; to prof e the motor and the brakecircuits and also railsor.

ie proviprotecting circuits, and especially noininally iclosed circuits, ada ted Apparatus for'the above mentioned par poses and attaining the abovestated objects, are useful for man purposes but have been especially provide by me and applied to a system of independentacars on a shuttle track for carrying commodities from a place of discharge, for exa brick machine in chick manufacturing establishment; I

e In abcom )lishing the stated objects, I have provided certain arrangements and structures, illustrated in apreferred form inthe accompanying drawings \vherein Figure 1 is a" e tracks, switchboards, conductors for both the driving and the braking circuits, and the current feed supplies therefor;

Fig. 2 is a diagrammatic view of the car wiring and,.circu1t changer, including both the circuit changer-circuit, the several conmotions 'to and thecircuit protecting means; 3 and 4 are'respectively side and end elevational views 'of a preferred form of controller device foruse on the switchboard; Fig. 5 is a fragmentary elevutional view of part of the structure of Band 4 taken on line V of Fig. 3; and y y Figs. 6 and 7 are respectively plan and elevationul views, both partly in section, of a preferred form of, car, and means for actuatingthe same.

- Pig. 8 is a diagram illustrative of the and currentfced syvitchboards, conductors supplies reduced totheir simplest form.. Before describing the drawings in detail, it isto be observed that thesystem shown therein is vention for the sake-of illustration, audit is to be premised that the several cars used therein are each'equipped \vitha driving motor, an electrically operated brake and a collector. such as a trolley or rail shoe.

general wiring diagram of between'such circuits, and

but one embodiment of my iii-.

brake-device for the q 00 Accordin to in invention means are I x provided for lowering the voltage'supplied' to the cars on the tracks 'hen'ever it is del eas'e the brakes and again. The

grammatically in its simplest form in F1 so: the accompanying drawings which wil' a switch; hile the switch between points 22' V o'off-the resistancefRa by ineans QfJeadttmeans of the resistance-R1).

ralgement-of Fig. 1 is described. plied from the generator tact aw adapte be, explained before the more detailed ar urrent is'su bile terminal 0 which is grounded to 'the track 10 by leadw, while its other terminal is connected by means of v the lead w to switch contacts 19* and 22. In the ordinary operation of the carrthe switch point 19 is connected to switch-point 19 by means of and 22 is open; Current then flows alon w to the contact'ahof a double. rheostat.

' The contact a is connected to the contact a by means of the resistance Raaand, in turn,

contact a is connected to, the contact a by contact points is arranged asegmental con d to, be connected with any one of the contacts a, a or a by moving the arm ofthe rheostat to the right. \Vith the rh'eostatia'rm in contact with the con tact a the-resistances Rv'and R02 are short- 16 to the conductor by mert ly throwing the switch he connections ther ior braking purposes will now resistance coil is tapped -b circ'u ited and the current from the generator withoutresistance t0 the contact at .oi the magnetic blow out-device X,-and

froin thence by contact late :0 to the con,-

tact 17 rwith e'ither contact 17 or 17 as de'-.

sired. The current then flows through lead 15 adj acent' the track. v I It will be seen that a second rheostat is 'rovided oyer the one just described whic 7 is connected in parallel with the first rheostat so that it can be used in place'of the latterfrom the omt l'glover to the contact 17 instead of to the fl ol ltuct 17. d

scribed provide means for-supplying fullgenerator potential to the cars. on the track,

and also for vary ng the potential to sorne extent by. means of resistance. The means emploved for reducing the voltage still furbe described.

'WhenIit is desired to apply the brakes [the switch between switch points 19 and-19- ;is opened, and the-switches between 22 and 22*, 21 and 21, respectively, are closed; The v the: switch between flowthro'ugh lead t and resistance *R" to the result" of the closing of 22 and 22 is to cause a current to track 10. I along this resistance, for instance, Rb, t

a; lead nected' to the contact point 21", @from' which current'fiows to contact '21, lea'd-zfto the At a p'oint of suitable potential;

means adopted vfor controlling the voltage applied to the cars is shown dia- QppoSite these f switch contactflj. v-

and apparatns ust destat r S. [Additional contacts b grovided connected to; tances B2 and y fihek a m i "th contact 'w itli' contact b direct connection is made with the segmental contact bw which is connected to lea'dllfifi; switch contacts 1'? and l-Llead 16; andmonductor 15. In thls way'the voltage supplied to the conductor is that of the generator less the voltage r heostat :1 in

drop in the resistance Ba between the points 22 and Rb. The resistance Rfenables this reducedvoltage to be regulated within M small limits. An indicatoris providedadapted. to show whether curifent is flowing through the resistance R5. "Forthis pinose current is taken fromfla point such'as connected to' switch contact 23 and through switch contact 23, lead t three indicator lamps arranged the points 21, 244; 25,

conductor. For controlling a plurality of in parallel: between v '25, Hand 26, and. finally to the track and back to the gen- 7 control onezsection' onlyof the sections independently of each otherthe ar-' rangement shown diagrammatically in Fig. shown ;1u llg. l,";.A-1

j.1 isrprov1ded. v i

"In the arrangement and 15 represent; loading and discharging I station's, respectively which may 7 mi iexampl an lectrically operated sh v and "1a dumping apparatus at; a brick machine; 5'

,s bstantiall conductor or'v ithird: rail? divided '.,';int0 gaf, number of insulated sections 115,- 15; 15E

of tracks 10, '11, rarej-prov dedrfor shifting Each track incorporated in the t as gth,- save when nterrupted" orhereafter tobe 'mcr'e;-,= specifically referred to,; both "single feed,

and 15"(each beingvcontroll'edb jaswitchl 7 through which the "current ior raking theicars, as well asthecurrent:fordriving-thern,

is sup liedjto'themotors afterItheblfekesij I d with. fourqrheostats adapted to;

thereo,um alternation... flhe switchboard G is provide act in themannered with Fig; 8. .The uppermostlof thesevcontrol's' the 'potential supplied 1 to they sections of condn'ctor 15 adjacent station B; The "next "controls the section's of rc'oiicluct or. 15?.

ascribedinv connect ons.

-"intermediate between stations Aland B. j The} rheostat 8 is 'conn ,used' in p y ling the potential supplied to any. of, the sec: tions of the conductor.- The lowest rheostat hej 'controlsthepotential-atthe station-"a. .It

will be'observed the the four. are

connected-in parallel warren-apnea ances that; it 1 can be lace oflthejrheomat' S for "control-Y j 12 5 B', R". Similarly all four rhsostat's are cone lao nected to the point Rb on the resistance R" employed. for reducing the otential to :apply the brakes. There are," urther com- "plications which can most readily be described byi tracing the circuit from the gen-' erator to the conductor, firstover the power circuits and then over the brake circuits. Beginning Wlth the power circuit, the generator M is connected to tli'e switch ter minal 19', which is connected by a switch to the point'19, and thence by the leads w,

I w to the rheostat contact'a?andxresistance R The contacts a and a are connected to.

resistance R by leads .w and we, respectively. At 01. connection is made with the contact. 0' of the circuit breaker X, 'to be hereinafter described, which is used' for protecting the relatively high potential circuit 'of the motor. The current then-passes from a to the segmental contact aw, along the lead 16 to the contact 0: of the circuit breaker X, and thence to contact a, leads 16', 16 .and switch term nal 17f'on the switchboardS to the switch contacts-17 of this switchboard are connected the leads connected to the various sections of the conductor adjacent the track. As shown, three sections of the track are connected in parallel to the lead 16.

rheostat's on the board C.. The rheostat S is connected to. all of the switch contacts 17".

opposite the contacts'17 connected to" the various tracksections so that by throwing can controlled by means of the rheostat S. From the contacts 17 the'.' current passes along lead 2" to switchlcontacts 17 on the switchboard S',"and from thence ,to switch contacts 17", lead 16* to the -rheostat S .When it is desired to 5 apply the brakes, the switch between the point 19 is first opened an then tlfelswitches between points :22 and '22fand 21 and 21, respectively, are closed. Y The' point 22 is connected to the end of the resistance R' j, and the oint 21 connected to the point Rb as descri edinthe Fig. 8. The connections, however, between the rheostat's on the board C and the switch point 21 are somewhat more complicated In the arrangement shown in Fig. 1 the current passes from the switch contact 21 to lead 2, switch points 20, 20, lead a to leads 2, z and z" to the 1 contacts b on' the left .hand side of the rheostats on the board C. Connections are made, between the resistance R and the switch contacts I), bf by the leads a and z, respectiyely. From the contacts 6 the current passes to the segmental contacts be, and from thence'tothe switchboard S and the various sections ,ofthe conductor in the same manner as the power circuit.

Similarly, two of such. leads are connected to .each of the upper two one or. other of the switches upward'from' the mint 17 any of the sections of the track int 19 and the The rheostat Sis-adapted to. control brakmgpotential in exactly the same way.

asthe power potentia I Referring now more particularly to Fig. 2 wherein I have illustrated the car wiring it will be seen that the car is provided with a conductor connected to a collector shoe 1 (not shown) taking current fromthe third rail sections such asiare indicated at 15 (F g. 1)' and by a conductor 111 having 1 branches 112 and 113 to solenoidal coils 114 and 115 respectively, for operating the brake devices presently to be described, the conductor'llO being also connected by a con-- du ctor 116 to aicontact point 117 on a circult changer 118. In the circuit'changer 118 as here shownI employ a solenoidal coil 119 connected by the conductor .120 to, the

conductor 116 and thence to. the rail shoe, and connected the conductor 121 to a res1stance'122 which in turn isconnected by a conductor 123 to the ground 124 through the car wheels in the customary manner; and a core 125 is actuated by ,the' coil 119 and royided with a contact plate 126 for estab ishmg circuit, when excited, between the conestab ishing circuit between the contact p01nts127 and 127. The'contact point 117* is connected by a conductor 128to a contact tact points 117 and 117',7but when at rest 129 on a pole" changing switch device 130,

having blades 131, 131 and thence by the conductor 132 connected to thecontact 129'- and having. branches 133, 134, to the armstures 135, 136 of the carmotorswhich are arran d in parallel and are in turn cannecte by the conductors 131 and 138 to the ontact point 139' on the pole cha'n r 7 through the returnconductor 140. he contacts 127 and 127 are respectively connected .by the conductors 141 and 142. to the conductors 121 and 128 heretofore referred to, Q i

and the contact'127 is likewise connected to the branch 116 of the main feed conductor 110 by means of a conductor 143, a resistance 144 bein placed in the-circuit to protect the same.' he solenoidal coils 114 and 115 are arranged in parallel and connectedby con-v ductors 145' and'146 to a conductor 147 and thence by the conductors '128'and 142to the contact point 127'. The contact'po1nts'129" and'139are connected by-crossed conducarrnature circuits, and the contact 139 is connected by a conductor 150 and branches thereof 151, and 152 to the field wlndlngs 153 and 154 of the motors 135 and'136, such windings having connection by the-conductors 155 and 156 to the ground 124 m the manner heretofore described.

As will be manifest upon consideration of the circuits above described, to the end that prom t application of the brake may not be inter cred with, the solenoidalpcoib 119 1 361 tors 148 and 149 to contactpoints 129' and .139 for changing the polarity of the motor should be so wound members a a a? R',and-with a contact member am connected. a contact a: on one of the magnetic 'blow outde'vices X,

"connected to the 2O quickly respond to current of 220 voltsor overito the endthat hunting of the armature" 125 and consequently failureof the motor circuitandloss of control ofthecar may not ensue. upon opening ofthe braking circuit. Referring now 3,4-aud 5,,it will .beobserved that in the preferred by me each'controller device S more particularly to Figs.

form of controllerboard employed (see Fig. 1) with an insulated base '1 provided with a plurality ,of' motor contact connected to the resistance is provided midi als P ov it plurality of brake contact members bw co d to acontact c f contact member won one of the said devices X all asabove tacts-o'and' d connected '35.

thedevice X.

. pivoted as indicated at p to described. v I a The'controller S also has a'pair of conrespectively to the I oint cwof the winding of be "operating lever S is the base I and contacts'a and a carries a contact member m suitably secured ;it= nonaa1 position, with an extension e:

of-a'lmk end is pivoted at p to theframe f and at the other end carries. the brush (1. For reis storing, the contactbetween 0, d, as shown in Fig.3, a spring a i insuring 'rapid u ative position relatively tothe: several other For pro? circuit breaker including,

i movable ti n with the contact 0 For. blowing out the rightz but pivo rpivotally engages thereto and insulated therefrom as shown at i",- the contact mbeingheld'm opercontacts by means of a spring a. 'tecting the relativelyhigh potential motor circuit- I apply to each controller device S the circuit rea secured to the base I as ker mounted on a j fram ef p indicated at f, such brush d contacting in neutral fixed to the the are on returning the of the contacts a, a', a to the lever S a is provided posilever S from any I, said link having a in p, against which the extension -e ahuts w being curved at l permitting freemovement of the lever S to the left in operating-the brake. The link I pivotelly "engageset pl abellcrank arm 0 whichis and in turn 1' passing)- tedatp'to the frame f at p a rod through an aperture in a link I? which atene I 's interposed between the link I, and the pivot point 72. For movement of the brush (1 pon return movement of the controller S, a dash pot d preferably filled with oilpivotany engages at 72 the bellcran'k (F and within the dashpot d /is reciprocally mounted a plunger 1 pivotallyengaging the link I at 7), the head h of the plunger P havingnn opening'o-econtrolled by a ball valve 1;, which v as to be unresponsive to current of less"thfln 160 voltsbut should bell crank lever c v freely from the lower portion thereof .tween the contact members (3' (I handle S is returned toward the position 'arm 7" intermediate other end it bears on d is pivotally connected ashere shown, the

base I lotted for the reception 6 and 7, wherein en moved to 'frame 213 and the arm "jaws 218, 219 are construction I ment of the v ash pot cl but retards its return movement.- From the foregoing it will rmits quick upward movebe apparent that when the lever S is thrown toward the contact a" the movement of the dash pot device will be as follows: The projcction 0- through the medium of the pinforces the link I and the; lower arm of ti toward the leftcausing the dash pot d to rise, the fluid passing through the valve 1', the headh remaining stationary. the sping on therod r being compressed and the circuit maintained be- As the shown the following action takes place: a

The liquid now in the upper portion of the dash pot is prevented from rapidly returning tothe lower portion of the dash pot. and therefore in thereturn of the dash vpot to its normal position through the action of gravity the plunger accompanies 'it drawing the brush didown against the pressure 'of the springaflwvhich' as-the fluid leaks past the head, hgradually restores thebrush (l and tlie other parts to the position shown.

f The spring 3 produces; the necessary return movementof the arm I as the result of the" fact that atone end it bears on the between the pivot point .p of the arm and the pivot point p of piston rod P of tiedash pot. while at its the. outer end ofone arm of the bell crank 0% while the dash pot arm intermediate"between the pivot p of thebell crank and the point of the force of the. spring, namely. 1). The

resultis that the spring can extend morei readily by depressing the dash pot-than by raising the arm Z;

Referring now more particularly to Figs.

1 have illustrated m preferred form the electrically operated brake.

device employed by me. it will beapparent that in the embodiment of my invention here shown the driving motor 210 ofthe car is supported by the axle 211 provided with wheels 212,212 throughwhich certain of the circuits described. are grounded, and

.that the brake device including thesolenoidalcoil 114% (Fig. 2) is supported by a frame'213 extending from the motor casing. To theframe 213 is attached. as byscrews 214,a split iousi-ng 215 in which the solenoidal device 114'rnaybe held by ing bolt 1216 the casing 210 through sa d 217 also serving to support the brake pins 218 and 219 pivoted uponthe pin 220 and ,removahly held thereupon by means of the cotter 221. Upon the Hivotally mounted as indicated at 222 an 223 respectively brake shoes and 225 adapted to bear on the 10s, at p to the same of application the clampbetween said jaws 218,219 and the casing' 114--115 through scribed in connection therewith.

It is true that current flows through the brake wh el 226 mounted bathe shaft 227 the armature 135, (Fig. 2) when the of brake device is actuated. The brake jaws 218, 219 "are'held, out of contact with the wheel 226 bya spring 229 and the a gravity respectively save when sai ]1 I.WS areclalii ed u n this said wheel by excitation of t e so enoidal coil 114as shown in e springs 229mm 230=are mounted on the armature cores 231 and 232 and retained in position by being respectively interposed 233 of the solenoidal coil 214 and a shoulder 234 on. the solenoid cox-e232, the-spring 230 being ofasuliicient strength to support'the It will be notedthat the brake core; 232. I

whole is applied through a rela-' device as a tively .heavy spring 235 interposed'between the,]aw 219 and t pin 236 in the end of the core 232,,thus providing for a' slightly yielding braking action.

Assuming therc'ircuit changer device 118 on the car to beactuated by volts, upon throwing out of the motor circuit and throwing in of'the brake circuit the constantly maintained lower potential, say, volts, will not suflicient to sustain the motor circuit, whi ch would prevent the application ofthebrakes, whereas when the resistance 'R is employed, upon throwing out the 220 voltjmotor' circuit and throwing in the resistan portion Ra, such portion Re Will beflin series with the brake coils 5, b it, 1 17-, 17, 1s, 5, 110, 11-1, 112113, 111411147, 128,

ances Ra 114 will be in parallel with the resistance portions R0, R1], grounded at w and with the motor and field windings 135-153, aud136-154, respectively. Under the conditions just recited the major portion of the current will at first tend to pass through the motor rather than the brake' windings since the latter are pure resistances; thereby causing a greatdrop in the voltage of the current passing through the coil 119 and allowing the core to sin the position shown and establish the Erake circuit, at which time the current ,will be divided'a art of the current being lirake windings and the remainder grounded through the wire'w and the circuit field and armature windings of the motors on the carat alltimes. brake coils are in operation, not only is the current reduced as the' result of the lowering of the potential between the conductors 15 and the ground from 220 to;110 volts, but

meme 1 action of a l a current having a regular operating-potential of, say 220 a circuit including the members 711",19, t, 33, 33,", t, 22, 22', t,'Ra, a, 21, 21, 2. 20', 20, 2, 2 ,2.

142,127, 144, 120, 119, 121, 122, 123, to ground 124, and these resist- 140, 137 back to 135.

, Considering that the following circuit- I 122, 123, 124 is closed ifting plunger 125,11 available to the.

the circuit-#110,111, 112,114,

However, when the also the coils of reason of the fact series with the'coils 144,119,114 and 115, (the four latter coils, are also in parallel withv each other.) Consequently the current through the motors is relatively very small when the brakes are applied.

When, however, thepotential israised to 220 volts, the I voltage impressed across the terminalsT of the motor is the-full-line tential owing to the fact that the coils 14 114and 115 are short-circuited by reason of the contact 126 bridging the contacts 117 and 117". At the sainetime solenoidalcoil 119 is disconnected from its-previous parallel relation with respect to the coils 144, 114, 115 and comes potential on the field and armature the motors is further reduced by that the motor coils are'in into series with the resistance 122 alone.

When the current through the motorsis refduced asabove indicated by lowering" the line potential and throwing the 00113144, 119, 114 and 115 into series with the-motors,

the current is not suflicient to operate-the;

motors are not operated at the same time, but are operated in alternation as described 'in thespecification and asspecified in the claims, 1

When'a' car on the tracklO-runs down latter. The result is that the brakes and the grade and conductor 15 is not energized, in"

which case the air becomes a motive power driving the motor 135, ,such motor .in" turn becomes a generator, generating current which is dissipated in through the resistance coil 122,, this forming a retarding elementcr dynamic brake governing; the speed of the cardown such grade and preventing it from running away. Itis to be noted, however, that'with' the our operating under theconditionsjust described, the motor does not generate cur- Wl t' of a potential high enough to excite the ,gcoiklls 'sufliciently tolift the plunger 125,

and consequently the circuitremains closed 7 leaves'the following circuit established,

through the points 127,126 and 127', which starting at motor 131,- 129, 128, 142, 127*,

:110, 11.6, 120, 11a, 121 and coil 1'19 excited. motor circuit is established'as follows :-110, 116, 117,

the form of heat 153,- 155, 124 which hasless resistance than 1'45, 147, 128, 129, as above .to 124 and-cones uently the current in the brake coil 114 willdro'p to such a low potential as not to eigciteapprech ably the brake coil 114 and coiise qucntly setthe' brakes is avoided;

tin of dcwliptionityilli rom thetabcae dent that in gymn t car beingnea'r troller S over to thelett to t switch 130 strikes statioxi Afo-1badihg rb e r insr the controller S3 excite its. v motor,

the armature,- Thereuponz'thaloaded car from a the feed of the o rator y means of the switchboards and D, as heretofore described.

Arriving at the terminal B of the track,

the car ..willbe sto ped in the proper place andflgradually, y the oper t m the con- "row the current from the circuit; operating .the

nipulating switchboard C, movin ,motor'and* onto the other circuit to apply the brake. It will be observed. thateac v sectionof the track can be controlled by one of thevcontrollers-S independently of any other section of the track which-may be in n dependently" controlled by another a conof the switch board 5' is connected to the sectional conductor 15,

troller', so that Within certain limits one car can be operated without affecting the others, This individual control is obtained by'mean's The contact 17 and the-contacts shown to theirightof it 15' and controls the, caron section 15. If theswitch connects contact 17 with contact 17, section 15 is controlled by controllers, and

so on. v

It'will thus be seen'thata single operator stationed at the electric switchboards can manipulate any one of the cars-to start or stop itat any desired point on the track,

and that such car when it reaches either of the terminals ofthe @track automatically reverses its driving mechanism. This 001 1- trol isrendered perfect and easy by reason of the means forvaryi-ng the current on any one. of. the'several sections of track or upon all of them, so that the individual cars can be driven at any desired speed or stopped as quicklyas necessary,

desired itwill be evident that the track maybe in as' many sections as desired and-the feed-rail may everywhere parallel such "trol carsrand the speed of them collectively. and

track; Thus the operator has complete conover the;;relative positions of all the individually at all parts of the-track.

I It is thoughtthat jsystems illustrated em ploying-my present invention will fully understood by be which it pertainswithoutgreater amplifica driven toward the terminal until I the suitable means .(not shown) fOl reversmg the current through;

' ,desire to secure by Letters will move toward the right, passing into the switch 13 and along thetrack 10 to the: terminal B, receiving current: rail 15 and movin ata-speed under control .ferent circuits having perative contactwit contact with said conductor.

different 17-'is connected by the. 17, the controller S I duct'or. v

,. motor and brake,

at'any part of the track where such operation may be desired.

,By't-he arrangementv 0f the resistances to 1 'motor driven cars'each having an electric the car ior supplying tion of the description of its operation. a a

Having thusdescribedmy invention and illustrated its use, what I claim as new and Patent is? s 1. The combination with a 'railway track,- of a feed conductor independent of the track, -'means for, supplyingvcurrents ofvdi f potentials to said conductor, amentral switchboard 'havin ;a variable resist-[f canoe 'anda single contro let. to vary the cur rents ;.in' said conductor; and a series'pf independent cars onthe track provided with motors and hrakes, and motor and jbralie o conductor-i ;v l y Z'The combination with a tailWaJytrack, of a feed conductor independent ofthdtrgck means -for' supplying currents of difi erent potentials'to said conductor, a single' -con-a' 'troller to vary the currents in said ,cdriduc- .tor; and a series of independent cars onithe track provided with motors and brak es','-a nd motor and" brake circuits having, operative 3. The combination-with a car having an electrlclbrake, of le -single.

feed conductor external'of thecar for'sup- 1 1 plying the motor and brake, andan 'electrici controller for controlling the motor and brake in alternation from a distantflpoint throu h said feed conductor.-

4. he combination with a'motor driyen car having an electric brake, of a single plying the motor and brakeyand means control the motor andbrake in alternation f' from adistant point through said feed con' j I Y 10s 5..lhe combinationqwith a-plurality of motor driven cars each having an electric brake, "of a single feed conductor for-the" and means for controlling the motors and the brakes ot the [cars in alternationjfrom a distant point. y 6.' The combinationwith a plurality of motor driven cars each having an electric brake, of a single. feed conductor for the 7 motor and brake, and'means for controlling 115 as well the several motors'as the'fseveral 1 brakes insequence from a distant-point. I

7 The combination. with a plurality v. of

brake,- of'a single feed conductor external car for supplyinglthe' .motor and of the brake,"and means for controlling them at. Wlll from 'a distant poirlt conductor.

8. The combination with apIurality of motor driven cars each having an electric brake, ofafsiii'gle feed conductor-,exterhallof p 'motor andbrake, and cans tor contro ing 'saidimotor'land 1'66 feed conductor external of the ca forsup-f-f through said iced a plied to said was! said feed conductor and operating them inf dependently of each other.

9 The combination with a plurality motor driven cars each having an el'ectric 5 brake, ofa single feed conductor external,

of the carsfor sup lyingthe motors and brakes,-'and means or controlling the motors and the brake devices of the cars in alternation from a distant point through said. feed conductorifl a x a 10. The combination with a plurality of 'motor driven cars each having an electric" jbrake, of a single feed conductor external of the cars for" supplying themotors and brakes,,and means for controlling the motors and the brake devices of. the cars in 0.1- ternationfrom a distant point through said a feed conductor independently of any other car.

' 11. The combinati car provided .with

supp ying jcurrentt onwith a motordriven a brake, of means for said motor and brake, cgmpl'islng a ,supplz conductor, means for varying the potentia of the current supplied; to said conductor, and means on the car for directin I current of relatively'hi' her poten-. tial to'l ieumotor and current 0 relatively lower potentialto the brake. 1 l

12. The combination with a motor driven car provided with a brake, of means for supp ying current to said motor and brake comprising a "supply conductor, means for varying e potent al of the current supplied to said conductor, and means on, the car-for directin' current of one potential tothe motor an current of another'poten- 'tial to the brake 1 v ,13. The combination with a motor driven oar rovided with a brake, of means for supp yin'g current ,to s'aid motor and brake p comprisin fa supply conductor, means for varying t a potential of the'current supplied; to said conductor, and means on the car-for directing'current greater than a cer- 5 tainpotential to thenmotor and less than a certain otentialto the brake. v t n (14. The comb nation with a motor dr car provided with it-brake, of means -'supp y'ing currentto said potowaiifl brake 5o comprisin a supply pondijet'or, means for varying t epotentizi'l ,ofthe current plied tosaidconductor'and a circuit chan r3 a on the car 'pro""ded with means responsive to current of "relatively high potential foil directingthe f ameto the motor, said means.

being-non-refsponsivegto" current of a frela 1 tively low 'o l-an di arra-nged for div'erti thexsa e," othebrake. t 175, e co 6a "car' with a brake,

fsupp yin 'cui ient to said mo comprisin an fgiuppl conduct varying egp iven for ination with a motor driven of means for tor and brake. or, means fdr otentral ofthe current supconductor and a circuit chan er prdvided with means respons ve as on the {can sup,

on the car provided with m -si ve to current of of a central sw .to the'same,

.ducto'r and ip de p" "{track,;

same, offa central switchboard potential of th to current of one potential, and non res onsive to currentof another otential an arranged to directcprr'ent o onefpotentlal to the motor and divert current of another potential to thebrake,

16. The combination with a motor driven I provided with a brake, of means for ying current said'motor and brake comprising a supply conductor, means for varying t e potential of the currentsupplied to said conductor and a circuit chan r on the car rovided with means responsive to current higher than a certain'potential and" nonrresponsive to a current lower than a certain oten tial,- and arranged to direct current of? one potential to the motor and divert current. of another potential to the brake.-

car

combination with a motor driven cargfprovided j with: a .brake, 'ofineans for supp ying current to'said motor and brake comprisin a supply conductor, means for vary1ng ,t e potential of the current supplied to said conductor and a circuit changer eans responsive potential and non-respom another otential and arranged to directcurrent o one potential' to the motor 'andldivert current of another potential to the brake, said circuit changer being provided with a resistance for protectin the car current supply means.

18." he combination with a circuit of track, a series of cars thereon, provided with electric motors and brakes, and a sectional 1 conductor for supplying current to thc'sa'me,

itchboard having means to vary the potential and the flow of the cur: rent in certain sections of the conductor independentlyof'the potential of thetcur rent in other sections. a

1 9. The combination" with a track, a seriesflof cars thereon, vided with electric asectional conduct l. to current of one circuit on each pro' motors and brakes, and or for supp] ing current 11. of a centralswitchboard' havingmeansj to vary thepotential of the coni the strength of the current flowing' therethrough in certain sections inde -i ntly of the other sections; ZOQThe combination with a circuit of series of'cars thereon, provided with motors and brakes, and a sectional or .for supplying c rrent to the electric conduct to di'ifer entiall y'van'y' the cu eycurrent in u-ctor independe rrent and the v difierent sections tly of the other of the cdnd sections. a .21. The combin track, afseriesfof" c fale'ctric iiiotozsan or supp 1n ."c'ur tral switZhbard entially vary "the ation with a circuit of 125 ars thereon, provided with d brakes,sand aconductor rent to thesame, of a cenhaving means to diflercurrent and the potential 136 having means and a conductor for feeding "brake of a single centra brake, of a, single central ferentially varying the potential of p the 'ng'both the motor and the brake fromfa distant central station.

connections to means of the current in said, conductor and eleo trical connections between said conductor and said motors, brakes,

pectively.

cm electric motciflgnd anelectric and switchboard controller for the potential of the" current for ing both the motor and. the brake from a distant central station. z

23. The combination with electric motor and an electric brake, and a conductor for feeding the motor and controller for difcurrent "for control 24. The'combination with a motor driven car.havin.g thereon an eiectrical brake, of a distant controller controllin station and a single feed'conductor there romto the motor-and brake, and a single controller havior supplying. cur rents of difi'erent' potentials and adapte brake.

25. The-combination with car having thereon an electricalbrake, of a distant controlling station and a single feed conductor cherefrom tothe motor and brakc,and a single controller having connections to means for supplying currents of different potentials and adapted to alternately energize the motor and the-brake, and means attached [thereto to vary the strength of current in each conductor.

26. The'cor'nbination with a motordriven car having'an electric brake,of a single feed r conductor for supplying current to the motor and brake, and controlling said motor and nation through a "ariation in the potential of the' current supplied through said feed conductor. 1 r a 27. The combination with a motor driven carhaving an' electric brake, of-a single feed conductor for. supplying current to the motor andbrake, and means for controlling said motor and lrrak'e in alternation through a variation in thepotential of the current supplied through said feed conductor.

28. The combination'with a motor driven car having an electric brake,'of a single feed conductor for supplyingcurrent to the mo tor and brake, and an elcctric controller for controlling said motorand brake in alter:

' nation through a variation in the'p otential tion of said brake through a variation of the current supplied through. said feed conductor and for controlling the speed of said motor and the strength of theapplica 1n the strength of such current.

29. The combination with a motor driven a car having an electric brake, of a single trolling said bination with a car having an brake, a track the motor and a car having. an a track motor and another d toalternately energize the *rnotor and the a motor driven current of another 32. The'comblnatlon with a car'havin'ga devices, means,

an electric controller for brake in alter feed conductor for supplying currenttto f the current supply through said feed co'nductor and for controlli motor and the strength 0 the application of.

h of such current.

- 30 The combination with a motor. driven car havin 4 I feed con uctor for supplying current .to a source of current an electric brake, and a single the motor and the brake,

ads. ted to give relativel high .and relative y low potential, one or operatin said for operating said rake, and means for controlling the supply of current from said sources can having an electric feed conductor for supplying current to t motor and the brake,

31,. The combination brake and a singlle e tively low potential, one for operatin motor and another for operating saidsources to said conductor, the

the motor and'brake,-and means for con- .1 motor and brake in-alternation through a,-variation' in the potential of; H

thespeedofsaid' D said brake through a variation in the "strengt r to said conductor. 2: witha motor driven 1w.

a source of current ng adapted to give relatively high and rela-;; said a w rake,

and means for controlling the supply-of curv a 1 r rent from said car being supplied with means for directing v current of one potential to. the motor and potential to the brakes.

motorwand a brake, bothelectrically actuplyingcurrent thereto, of a main source of current of relatively'high potential for energizing one of said electrically actuated be supplied for energizing-the other of said electrically actuated devices and controlling means I for dividing the current from said sourceof supply whereby part ofthe' divided current may ated, and a single feed conductor for supfor g supplying either undivided current from I said main source, or a to said feed conductor.

33. The combination with :a car-having a motor anda brake, both electrically actuated, and a single feed conductor'for supplying current' hereto, of a main source of current of relatively high'potential foriena r of said electrically actuated de- I ergizing one for dividin the current: from vices, means said source of supply divided current may be supplied for 'energizing the other of. said electrically actuated devices, variable resistance means and con trolling means forw ereby part of the divided part thereof,

supplying either undivided current from said main source, or a divided part thereof, to said feed conductor, either directly or through said variable resistance means.

driving the car adapted-inturn to by ,thecar, a brake for the car,

ent automatic means for-retardingsaid driving means when said driving: means is .34. The combination of a car, means for i he'driven independ-' driiten by the car, means for operating the 'anotoiz,and.alternately-acting means for opcrating thelbrake. the said retarding means being arrangcdnto operate when the means fol: operating: the motor is at rest.

-- 3 The combination of a car, 'neaus for driving the ,ca r adapted in turn to be driven by the car. a brake for the car, independent means for retarding said driving ineans when said driyiugr means is driven by the car.- means for operating'the. motor, and alptermitcly acting: means for. operating the laralw. .the said retarding means being arranged to operate wheat-he means for opcrating the motor is at rest.

30. The'mmbination of a car, a motor for dri\ mg the car, a brake for the car, indepelu'lent mcansfor retarding said motor when said motor is driven by the car, means .for operating the motor, amlnlternately act ing: means for operating the brake. the said retarding means being arranged 'to operate only when the. means for operating the m0- ,toit'is at rest. I

-2; 37..lhe combination of a car, a. motor .for driving: the car. a brake for the car,'1n-

dependent automatic means for retarding .saidauotor .whens'aidmotor is driy'e-n by the car, means for operatin, the motor, and ;alte1aiately acting means for operating the ibralte, the said retarding'mean-s. being ar- .:.;1.'angc.dqto operate only when themeans io yenatingthe motor is at rest.

38. The combination of a. car, means for 35,.drivingthe car adapted in turn to be driven '.,'by -the car, independent automatic means for retarding the car when said car drives said motor, means for operating the motor, and alternately acting means for operating 40rthe brake, the. said retard in;.:-- means being a rrungedtr operate when themeans for operating the motor is'at rest.

'39. The, combination of a car, means for drivfing the car adapted in turn to be driven by the car, a. brake for the. ear, independent -,mean'sadapted to retard said driving means when the car descends a. grade, means for (operating the motor, and alternately acting 3 means for operating the brake, the said re tarding means being arranged to operate. "when the means for UPPIlttlIJfItllt-B motor is atrest." V

40. The combination of a car, an electric l 1'notor,'.a. driving), connection between the mo-. 55 torand the car, electrically operated means forbraking the ca r, suitable. 1nean.s for supplying current. to..sa id motor and braking ing resistance in the motor circuit when said 160 motor is propelled by the car. the said severalelc'ments beiug'so arranged thatrth'c motor resl'iofuls when current of one potential is supplied to said current supply means, the braking element responds when current of a M another potential is supplied to' saidcurrent for poses the motor when the ciirrent supply is p i 180 supply means, and the resistance opposes the motor when the current supply 1s discontinued.

41. The COlIllJlnfltlOll of a car, an electric motor .a driving connection between the motor and the car, electrically operated means for brakingthe car, suitable means for supplying current to said motor and braking means, and means for inserting re- 1 sistance in the motor circuit-when said motor is propelled by the car, the said several I means for supplying current to said motor and braking means, and means for automatically.retardmg the motor and thereby the car when said motor is driven by the car, the said several elements being so ar- 3 ranged that the motor responds when ourrent of one potential is supplied to said current supply means, the braking element responds when current offanother potential is supplied to said current supply means, and the retarding means opposes the motor when the current supply is di'scontinued- 43 The combination of a car, an electric motor for driving the. car, electrically roperated means for braking the car, suitable means for supplying current to-said motor and ln-ali'ing means, and means for retarding the. motor and thereby the car when said motor is driven by the car. the said several elements being so arranged. that the motor responds when current of one potential is supplied to said current supply means, thebraking element responds when current of another potential is supplied to said current supply means, and the retarding means opposes the motor when the current supply is discontinued.

44. The. combination of a car, an electric motor for driving the car, electrically operated 'means' for braking the car, suitable means for supplying[current to said motor .and braking means. and dynamic brake means for retarding the motor and there y the car when said motor 15 driven by the car, the said several elements being so armeans, and means for automatically insert:

reiit supply means,- the electric braking means responds when current of another potential is supplied to said current supply means, and the dynamic .ibgakez means opdiscontinued.

45. the combination of a car, an electric motor for drivingtlie car, electrically operated neaiis for braking the car, suitable means for supptymg current to said motor and braking means. dynamic brake means for retarding the car'wlien said car Kll'lVBS said notor a'nd a circuit changer, thesaid several QlCITIODtS being so arranged that the motor responds when current of one potens tial is supplied to said current supply means, the electric braking means responds when current ()f'tll1( )fill01 potential is supplied to a said curi'ent'supply means, and the dynamic brake means opposes the motor when the current su iplyis discontinued,

46. The combination of a :ai', an electric i iotor'for driving the ear and adapted in 'turn to be driven by the ear. eleeti'icaltv :op-

erated means for braking the ear, suitable. means for supplying current to said motor.-

andisaid braking means, and-a d 'naiiiic brake element, the said dynamic h'akc c'leincnt being relatively slio'rt-ci.rcuite'd with respect to the motor supply means when inotor current is being supplied to the motor aiid-is placed in circuit with the motor when the motor current supply/t0 the 'motor is discontinued. i

47. The combinatit ii ofarar, an electric -motor for driving the car. and adapted in turn to be driven 'hytlie rar, electrically operated means for braking the car, suitable means for sup-1iljdii; current t said motor and said braking InCtll]S,.tl' dyr'aiii-ic. brake, element, and 'acirciiit changer whereby the said dynamic l )ral e,'clement isgrelativ'ely sliort-circuitcd with, respect to the lIiO tO l'i supply means v-h'en motor current is being supplied-to the motor :llltl' is placed in e-ircjiiit with the motor when the motor current supplied to the motor is. discontinued.

4 4. The combination of a car, an electric to tlKflllfl'L'llt (ifoiie potential.

motor for drivingthe car, electrically ,o 'ie rated .m'eans t'or braking the ear. dynamic means for retarding the car, and suitableconnections between said several elements so arranged that saidalriving meansres minls- .sai'd braking means responds to current of. aiiotl'ierpou ir tial. and said retardingmeans urn-rates whe .said motor isdrivenby said can".

'49. The combination of'a car. an electric lllOtUl'TOl? driringjthe car. electrically oper -ated -i'neans tor braking the car, automati- -rallyoperable dynamic means for retarding the can and suitable connections between said several eleiiients-so arranged that said 'driring means respondsto a current, ol one potential, saidbraking means responds to current of another. potential. and said retardingnieans operates when said motor is driven by said can.

50. The eoi'nbinatioi olia car. alreleetric mot-or'l'ordriving the car, electrically oper'-. 'ated means tor braking the ear, afeed con-' duetor, a circuit changer. circuits beta-teen said conductor and said motor and braking means lllt'lllll lllgtllt' circuit (-hangenaiul a dynamic brake element. the said several elements being so ar i- :lglll that the motorre sponds when current ol one potential is sup- )licd-t'o said feed conductor. the hrak'in' tential is supplied to said feed conductor and the dynamic l-irak'e elementjis dared "in series with and omnises'th'c motor, when the] (-iurrent discont-inned,

Tntestii'non whereof- I have hereunto subscribed witnesses, t

' -FRA-NK F. \VOUUFORI).

Witnesses:

MARTHA VVF IMAN, :PAUL (humus nu.

signed my name inv the presenre'ot the two -nieans reslw'nds when current of another l'io- 

